Radio shack Trc-494 User manual

Cat. No. 21-1589

OWNER’S MANUAL

40-Channel Emergency

Please read before using this equipment.

TRC-494

Citizen’s Band Weatheradio

21-1589.fm Page 1 Thursday, August 5, 1999 10:10 AM

Cat. No. 21-1589

OWNER’S MANUAL

40-Channel Emergency

Please read before using this equipment.

TRC-494

Citizen’s Band Weatheradio

21-1589.fm Page 1 Thursday, August 5, 1999 10:10 AM

INTRODUCTION

Radio Shack is a registered trademark used by Tandy Corporation.

Your Radio Shack TRC-494 is a 40-

channel emergency citizen’s band

weatheradio that is specially de-

signed for emergency situations. It

comes with a handy carrying case so

you can easily move it from one vehi-

cle to another. And, the TRC-494 is

also a 3-channel weatheradio, which

you can use to receive weather infor-

mation 24 hours a day.

You can power the TRC-494 from the

cigarette-lighter socket in any vehicle

that has a 12-volt, negative ground

electrical system. You can also pow-

er the CB from the supplied battery

pack.

Its features include:

CB/Weatheradio Switch — lets you

quickly switch from the CB to the

weatheradio function.

Emer

enc

Channel 9 Switch —

immediately switches the CB to

Channel 9, the universal emergency

channel.

PLL (Phase-Locked Loop) Fre-

quenc

nthesizer — provides re-

liable and exact tuning using a

frequency reference crystal.

ital Channel-Number Displa

— makes it easy to see which chan-

nel is selected.

Ran

e Control — lets you eliminate

background noise when no strong

signals are present.

Built-In Ceramic Filters — provide

superior selectivity and prevent adja-

cent-channel interference.

Built-In Automatic Noise Limiter

(ANL) — reduces noise caused by

nearby electrical equipment, such as

motors or automotive ignition sys-

tems.

External Antenna Jack — lets you

connect the TRC-494 to an external

CB radio antenna.

Note: The TRC-494 comes with a

telescoping antenna that you can at-

tach directly to the CB. You can also

attach it to the supplied magnet-

mount base for use when your vehi-

cle is not moving. If you plan to use

the CB when your vehicle is moving,

we recommend that you purchase a

standard mount antenna.

Important: REACT is a

nationwide 24-hour net-

work that monitors

Channel 9. Switch to

Channel 9 in an emer-

gency, and report the

problem.

Note:

REACT might not be available

in all areas.

21-1589.fm Page 2 Thursday, August 5, 1999 10:10 AM

INTRODUCTION

Radio Shack is a registered trademark used by Tandy Corporation.

Your Radio Shack TRC-494 is a 40-

channel emergency citizen’s band

weatheradio that is specially de-

signed for emergency situations. It

comes with a handy carrying case so

you can easily move it from one vehi-

cle to another. And, the TRC-494 is

also a 3-channel weatheradio, which

you can use to receive weather infor-

mation 24 hours a day.

You can power the TRC-494 from the

cigarette-lighter socket in any vehicle

that has a 12-volt, negative ground

electrical system. You can also pow-

er the CB from the supplied battery

pack.

Its features include:

CB/Weatheradio Switch — lets you

quickly switch from the CB to the

weatheradio function.

Emer

enc

Channel 9 Switch —

immediately switches the CB to

Channel 9, the universal emergency

channel.

PLL (Phase-Locked Loop) Fre-

quenc

nthesizer — provides re-

liable and exact tuning using a

frequency reference crystal.

ital Channel-Number Displa

— makes it easy to see which chan-

nel is selected.

Ran

e Control — lets you eliminate

background noise when no strong

signals are present.

Built-In Ceramic Filters — provide

superior selectivity and prevent adja-

cent-channel interference.

Built-In Automatic Noise Limiter

(ANL) — reduces noise caused by

nearby electrical equipment, such as

motors or automotive ignition sys-

tems.

External Antenna Jack — lets you

connect the TRC-494 to an external

CB radio antenna.

Note: The TRC-494 comes with a

telescoping antenna that you can at-

tach directly to the CB. You can also

attach it to the supplied magnet-

mount base for use when your vehi-

cle is not moving. If you plan to use

the CB when your vehicle is moving,

we recommend that you purchase a

standard mount antenna.

Important: REACT is a

nationwide 24-hour net-

work that monitors

Channel 9. Switch to

Channel 9 in an emer-

gency, and report the

problem.

Note:

REACT might not be available

in all areas.

21-1589.fm Page 2 Thursday, August 5, 1999 10:10 AM

For your records, we urge you to

record your CB’s serial number in the

space below. The serial number is on

the CB’s back panel.

Serial Number:_________________

FCC INFORMATION

The Federal Communications Com-

mission (FCC) does not require you

to have a license to operate this CB.

However, the FCC does require you

to read and know Part 95 of

FCC

Rules

. These rules apply to the oper-

ation of a Class D CB. We have pro-

vided a copy of these regulations

with your CB.

Warning: Do not open your CB to

make any internal adjustments. Inter-

nal adjustments can be made only by

authorized service personnel.

Internal adjustments and/or modifi-

cations can lead to illegal operation

as defined by Part 95 of FCC Rules.

Such illegal operation can lead to

very serious consequences.

To be safe and sure:

• Never open your CB’s case.

• Never modify your CB.

Your CB might cause TV or radio in-

terference even when it is operating

properly. To determine if your CB is

causing the interference, turn off

your CB. If the interference goes

away, your CB is causing it. Try to

eliminate the interference by:

• Moving your CB away from the

receiver.

• Contacting your local Radio

Shack store for help.

If you cannot eliminate the interfer-

ence, the FCC requires that you stop

using your CB.

21-1589.fm Page 3 Thursday, August 5, 1999 10:10 AM

For your records, we urge you to

record your CB’s serial number in the

space below. The serial number is on

the CB’s back panel.

Serial Number:_________________

FCC INFORMATION

The Federal Communications Com-

mission (FCC) does not require you

to have a license to operate this CB.

However, the FCC does require you

to read and know Part 95 of

FCC

Rules

. These rules apply to the oper-

ation of a Class D CB. We have pro-

vided a copy of these regulations

with your CB.

Warning: Do not open your CB to

make any internal adjustments. Inter-

nal adjustments can be made only by

authorized service personnel.

Internal adjustments and/or modifi-

cations can lead to illegal operation

as defined by Part 95 of FCC Rules.

Such illegal operation can lead to

very serious consequences.

To be safe and sure:

• Never open your CB’s case.

• Never modify your CB.

Your CB might cause TV or radio in-

terference even when it is operating

properly. To determine if your CB is

causing the interference, turn off

your CB. If the interference goes

away, your CB is causing it. Try to

eliminate the interference by:

• Moving your CB away from the

receiver.

• Contacting your local Radio

Shack store for help.

If you cannot eliminate the interfer-

ence, the FCC requires that you stop

using your CB.

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CONTENTS

PREPARATION ............................................................................................... 5

Supplying Power......................................................................................... 5

Using Vehicle Battery Power ............................................................... 5

Installing the Battery Pack .................................................................. 5

Attaching the Antenna ................................................................................ 6

Attaching the Antenna Directly to the CB ............................................ 6

Using the Antenna’s Magnetic Base ................................................... 7

USING THE CB ............................................................................................... 8

Setting RANGE............................................................................................ 9

USING THE WEATHERADIO ........................................................................ 10

CB OPERATION TIPS .................................................................................... 11

Common Uses for a CB Radio.................................................................. 11

Business Uses ................................................................................... 11

Personal Uses .................................................................................... 11

CB Courtesy............................................................................................. 12

Maximum Range ...................................................................................... 12

Using Common 10-Codes ........................................................................ 13

TROUBLESHOOTING .................................................................................. 14

Reducing Noise........................................................................................ 15

MAINTENANCE ............................................................................................ 16

Replacing the Power Cord’s Fuse............................................................ 17

SPECIFICATIONS ......................................................................................... 18

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